Loom



May 23, 1939.

G. WIGET 2, l59,8 28

LOOM

Filed April 28, 1958 2 Sheets-Sheet 1 wl won G. WIGET May 23, 1939.

LOOM

Filed April 28, 1938 2 Sheets-Sheet 2 llllllllllllllnlll nn. 1 nun-1| Patented May 23, 1939 LOOM Georg Wigel'QArbon, Switzerland, assignor to Societe Anonyme Adolphe Saurer, Arbon, Switzerland, a corporation of Switzerland Application April 28, 1938, Serial No. 204,840 In Switzerland July 6, 1935 2 Claims,

Thisapplication is filedas a continuation in part of the application of the same inventor Serial No. 87,026, filed June 24, 1936, and is filed forwthepurpose of meetingthe examiners bjections to the original application on'the ground a of inoperativeness of the disclosure.

This invention relates to devices forthe transfer of bobbins, cops, or other weft-filling carriers,

eral character of the device shown in Letters Patent of the United States No. 753,012 dated February 23, 1904 and granted to Draper Company as the assignee of Edward S. Stimpson.

The object of the invention is to simplify the construction of such devices and at the same time to insure certainty of operation and to prevent accidental and ill-timed movement of the mechanism. The improved construction will be fully described hereinafter with reference to the accompanying drawings in which it is illustrated,

and in which:

Figure 1 is a view in sectional elevation of mechanism which embodies the invention, one Weft-filling carrier or bobbin being shown.

Figure2 is a view of the same in sectional elevation on a plane of section at right angles to that of Figure and looking toward the left in Figure 1, portions of the loom frame, lay, shuttle race, and shuttle being also shown. In this figure several bobbins are shown in section as supported by the feeder and in readiness to be transferred to the shuttle.

Figure 3 is a view in sectional elevation as seen from the right in Figure l.

1" Figures 4 and .5 are detail views on a larger scale of parts to be referred to.

' Figure 6 is a view generally similar to Figure 2, but with the weft feeler and associated parts added.

to the left hand end of the shaft 2, the disc 3 having, on its inner face, a plurality of flat spring I receivers 5, each to receive one end of a bobbin X 3,55, A, while the disc 4 is provided, on its inner face,

with a lateral rim at its edge and with a notched ring 6 to receive in each notch the other end of each bobbin A, the rim preventing the dropping out of, the bobbins. Both faces of the disc 4 may be alike and, as indicated at 4' in Figures 1, 4 and 5, both faces are dished so as to form a projecting rim on each face against which the bobbin heads may bear. The bobbins are thus prevented from dropping out of the feeder, while, by reason of the yielding of the spring supports 5, at the other ends of the bobbins, each bobbin can be transferred from the feeder to the shuttle by the devices to be described.

Fixed to the shaft 2 near its left hand end, as seen in Figure is a toothed clutch member 1, while a cooperating clutch member 8 is mounted loosely on the shaft 2 so as to be capable of yielding in an axial direction and also to be capable of limited rotation with respect to the clutch member 1. A coiled spring 9, engaged at one end with a fixed portion of the frame, such as the right hand bearing 1, is engaged at its other end with the clutch member 8 and placed under tension thereby and tends, through the engagement of the clutch members, to rotate the bobbin feeder, after the transfer of a bobbin therefrom to the shuttle, in such a direction as to bring the next bobbin in order against an adjustable stop 25, in readiness to be transferred from the feeder to the shuttle.

The clutch member 8 is provided with a radial arm 8' which is engaged, through a pin and slot connection indicated at 8*, so as to permit some lost motion, with an intermediate member ID, which is pivotally engaged with a hammer-like transferrer l I, by which each bobbin is transferred from the feeder. The transferrer being actuated, as will be described, the connection between the transferrer and the clutch member 8, as above explained, causes the clutch member 8 to be rotated backward at each movement of the transferrer far enough to permit the spring 9 when released to drive the feeder forward, through the engagement of the clutch members '6' and 8, far enough to place the next bobbin in position to be transferred. The transferrer ll, pivoted on the frame, as at H, is held normally by a spring 12 against a stop 93 and to provide for actuation of the transferrer against the pressure of the spring l2 an extended arm ll of the transferrer has pivoted at its extremity a pusher l4 held yieldingly in position by a spring M. The pusher is supported with its free end in line with a ,bunter it carried by the lay l 5, so that in the movement of the lay to the left in Figure 2 the bunter engages the pusher l4 and causes the transferrer to be moved against the influence of the spring 12 in a direction to transfer the bobbin then in position from the feeder to the shuttle shown at w in Figure 2.

The means whereby the feeder is held from movement of rotation during the operation of the transferrer and whereby the feeder is positioned accurately will now be described. The disc lof the feeder is provided on its working face, and it may be on both faces, with radial, slightly curved and tapered projecting members H, which form between them nearly radial but curved grooves I8, the outer ends of the projecting members I! being so shaped as to form between two adjacent members a notch for engagement with a roller 59 which is mounted on an arm 20 pivotally mounted on the frame, as at 2!, and provided at its free end with a spring 22 and a spindle 23 which passes through and is guided by a perforated guide plate 24. The spindle 23 bears at its end upon the pivoted, yielding, spring-influenced pusher l4. By the action of the spring 22 the roller I9 is pressed toward the axis of the feeder and when the roller rests in a notch between two of the members I! and only at such time the pusher I4 is permitted to stand in line with the hunter HS in order that the effective movement of the transferrer may be accomplished, but when, in the rotary movement of the feeder to position another bobbin and the feeder is brought to rest with one of the members ll bearing at its end against the roller [9, the arm 20 is depressed, the spindle 23, bearing upon the pusher l4, holds the pusher out of alinement with the bunter It, as shown by broken lines in Figure 3, and so prevents actuation of the transferrer.

While the transferrer is thus prevented from actuation, when the feeder is not in proper position, it might happen, if means were not provided to prevent it, that the feeder might rotate slightly but sufficiently to move the next bobbin either wholly or partly out of the path of the transferrer. To prevent this the transferrer is provided on one side with a stud II, which, in the movement of the transferrer, either in one direction or in the other, travels with a close fit in the nearly radial but slightly curved groove l8 between two of the projecting members H and therefore prevents accidental rotation of the feeder, even to a slight extent, when the transferrer is moving in either direction. It will be observed that the projecting members i! are of such length that the feeder is thus held from accidental movement through almost the entire movement of the transferrer in either direction.

It will be noted that the formation alike of both surfaces of the disc 4, not only makes it possible for the disc 4 to be used either at the right hand end or at the left hand end of the feeder, but that the formation of the members I! alike on both faces of the disc 4 makes it possible for the members ll on the inner face to function as described, incoaction with the stud l l' of the transferrer ll, in the prevention of accidental rotation of the feeder, while the members H on the outer face of the disc permit the arm 20 with its roller l9, arranged for coaction with the outer ends of the members H, to be placed on the outside of the disc 4, as shown in Figure 3. That the control of the device for effecting the transfer of the bobbins from the bobbin feeder to the shuttles is such that the transfertakes place only when a bobbin is exhausted or nearly exhausted and not at each beat-up of the lay will be understood upon reference to Figures 6, 7 and 8 of the drawings in which the control mechanism, now to be explained, is illustrated.

There is provided a feeler F including a fork b which, at the instant when, in the operation of the loom, the shuttle and the bobbin therein are in line with the feeler, rests on the weft thread on the bobbin except when the body of weft thread is exhausted or nearly exhausted and then drops. The feeler has also an arm which overlies the arm 12 of a two-armed lever, pivoted at d While the arm e underlies a toothed pawl h. The latter is pivotally mounted on the. arm 9 of a two-armed lever 51, f, pivoted at g". The pawl h underlies an arm i, toothed as at Z, which is pivoted at 2" on one arm of a bell crank lever n, pivoted at n. The other arm 0 of the bell crank lever carries a roller 0' which rests on an eccentric is, continuously rotated through proper connection with a loom shaft. When the feeler falls, due to the practical exhaustion of the weft thread on the shuttle, the weight of the feeler rocks the lever 01, e, on its pivot and. raises the pawlh into position to be engaged by the tooth Z of the arm 2' in its movement to the right in Figure 6. To the arm of the lever f, g, is connected a rod m which at its other end is connected to the arm 3! of a bell crank 35, 33. A spring 32, connected to the arm 35, tends to rock the bell crank in a clockwise direction, as seen in Figure 8. In normal operation of the loom, before the weft thread is exhausted or nearly exhausted, the arm 33 of the bell crank 3!, 33 bears against a finger 34 of a protector lever 30 and prevents the swinging of the protector lever 30 to the right in Figure 8 under the influence of a pressure spring 30*. When, however, the feeler falls, by reason of the exhaustion or near exhaustion of the weft thread on the bobbin, the toothed pawl h through the medium of the arm 0 and the lever d, e, is swung upward so that its tooth stands in the path of the tooth l of the arm 2' and in the next movement of the bell crank n, o, in a. clockwise direction the rod m through the medium of the lever f, g, is moved toward the left in Figure 6 and the bell crank 3!, 33 is turned in a counterclockwise direction releasing the finger 34 of the protector lever 38 and permitting the latter to swing to the right in Figure 8 under the influence of the spring 30.

The protector lever carries a roller 35 which normally rests on the cam surface 36 of a. pivotally mounted arm 31. The arm 31 is fixed to a spindle 39 on which is also fixed the springpressed pusher I l.

Until such time as the shuttle is exhausted or nearly exhausted and the feeler F is permitted to fall the protector lever is held by the described means in the position shown in Figure 8 with the roller 35 resting on the cam surface 36 of the arm 31, thereby, through the described connection, holding the pusher I l down in the position shown in Figure 7 and out of the path of the bunter it. On the other hand, when the weft thread on the bobbin is exhausted or nearly exhausted and the bobbin is to be replaced by a full bobbin, the protector 3B swings to the right, moving the roller 35 from the cam surface 36 and permitting the pusher M to be swung upward into the path of the bunter 86, except at such time as, in the rotation of the feeder, the arm 20 is swung downward and, through the of the transferrer is also prevented.

spindle 23, causes the pusher I4 to be swung downward out of the path of the bunter l6.

It will now be understood that in the operation of the mechanism as now completely disclosed there is no bobbin-transfer from the feeder to the shuttle at each beat-up of the lay or at any time, except as required by the rotation of the feeder.

It will be seen that the construction hereinbefore described is not only quite simple as compared with the construction shown in the Letters 1 Patent first above mentioned, but that the action of the feeder when it is not in proper position is prevented and at the same timethe accidental movement of the feeder during the movement I claim as my invention: 1. A filling-feeder mechanism for looms com- 1 prising a rotatable feeder adapted to receive in ferrer, means to place the spring under tension, means to actuate the transferrer, and means actuated by the transferrer in its movement to render inoperative the first named means when the feeder is not in position for the transfer of a bobbin.

2. A filling-feeder mechanism for looms comprising a rotatable feeder adapted to receive in circular arrangement a plurality of bobbins, a transferrer to transfer each bobbin in succession from the feeder to the loom shuttle, means to rotate the feeder to bring each bobbin in succession into the path of movement of the transferrer, projecting radial members carried by the feeder and forming notches between their ends, a stud carried by the transferrer and adapted to enter the notches with a close fit, and prevent movement of the feeder in either direction, a hunter, a spring-influenced pivoted pusher operatively connected with the transferrer, and means actuated by the extremities of the projecting members to move the pusher out of alinement with the hunter.

GEORG WIGET. 

